A Multibeam SIS Mixer Module for a Focal Plane Array Receiver |
| |
Authors: | A Karpov J Blondel M Carter D Billon-Pierron and K H Gundlach |
| |
Institution: | (1) Institute de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble, 300, rue de la Piscine |
| |
Abstract: | The integration of many receiver units into a receiver array is a common method of improvement of imaging systems. This approach, well known in the mm band for Schottky mixer arrays, has not so far been developed for Superconductor - Insulator - Superconductor (SIS) junction mixers, which give the best sensitivity in the short mm wave range and in the submm range.We demonstrate for the first time a practical low noise multibeam receiver module using SIS mixer technology. The basis for the integration of several SIS mixers with a common local oscillator source is given by the saturation of the SIS receiver noise dependence upon local oscillator power. The module comprises three identical SIS mixers integrated with a common local oscillator, coupled through a three branch waveguide directional coupler. The multibeam module has been developed for a focal plane array receiver of the 30 meter radio telescope of the Institut de Radioastronomie Millimétrique (IRAM). |
| |
Keywords: | SIS mixer array receiver low noise receiver millimeter waves radio astronomy |
本文献已被 SpringerLink 等数据库收录! |